Battery of the type comprising a zinc can and a collector consisting of carbon for the cathode
CA 2402567 A1 · Owner: Gootzen, Jozef Franciscus Elisabeth · Inventors: Gootzen, Jozef Franciscus Elisabeth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Battery of the type comprising a zinc can the bottom of which is in contact , with the negative terminal and a collector which consists of carbon for the cathode, the zinc can be successively surrounded by a layer of electrically insulating material and a protective metal casing the metal casing of which , battery, on the inner side comprises an organic coating layer which serves as the layer of electrically insulating material.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.